Basis of Presentation (Details) $ / shares in Units, $ in Thousands	Apr. 01, 2018 USD ($) $ / shares shares	Mar. 31, 2018 USD ($) Subsidiary Branch	Dec. 31, 2017 USD ($)
Basis of Presentation [Abstract]
Number of subsidiaries | Subsidiary		2
Number of branch offices | Branch		18
Citizens National Bank [Member]
ACQUISITIONS [Abstract]
Total assets		$ 49,800
Total loans		43,500
Total deposits		$ 43,800
Citizens National Bank [Member] | Subsequent Event [Member]
ACQUISITIONS [Abstract]
Purchase price	$ 7,100
Shares issued per acquired share | shares	0.1041
Cash paid per acquired share (in dollars per share) | $ / shares	$ 2.19
Shares issued for acquisition | shares	149,980
ASU 2018-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of the income tax effects of the Tax Cuts and Jobs Act from AOCI			$ 0
ASU 2018-02 [Member] | Accumulated Other Comprehensive Loss [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of the income tax effects of the Tax Cuts and Jobs Act from AOCI			(139)
ASU 2018-02 [Member] | Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of the income tax effects of the Tax Cuts and Jobs Act from AOCI			139
ASU 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of net unrealized gains on equity securities from AOCI per ASU 2016-01			0
ASU 2016-01 [Member] | Accumulated Other Comprehensive Loss [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of net unrealized gains on equity securities from AOCI per ASU 2016-01			(77)
ASU 2016-01 [Member] | Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification of net unrealized gains on equity securities from AOCI per ASU 2016-01			$ 77